/**
 * @Author ZhangGJ
 * @Date 2021/07/27 06:27
 */
#include <stdio.h>

#define MONTHS 12

int main(void) {
    int days[MONTHS] = {31, 28, [4] = 31, 30, 31, [1] = 29};
    int i;
    for (i = 0; i < MONTHS; i++) {
        printf("%2d %d\n", i + 1, days[i]);
    }
    return 0;
}
